The Best Cooling Bed Sheets for Warmer Weather Stay cool during warmer months with these comfortable sheets from Parachute, Brooklinen and more Oscar Hartzog, provided by FacebookTwitterEmail Temperature is one of the most important factors in a good night’s sleep. If you’ve ever tossed and turned on a summer’s night, you’ve already learned this the hard way. This overheating typically happens because the ideal sleeping temperature is around 65 degrees Fahrenheit — a hard temperature to achieve during the warm months. But there is a relatively easy solution: the best cooling bed sheets. Cooling sheets can make a big difference in getting the sleep you need, compensating for warm outside air by trapping less heat and, in some cases, wicking moisture too. Loose weaves and special materials can significantly improve airflow in the sack, reducing body temperature and sweat. This hopefully means less tossing during the night, deeper sleep and more energy during the day.